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Finding the Fourth Proportional to 91,656.89, 126,486.34 and 51,370.64

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Solution

The fourth proportional to 91,656.89, 126,486.34 and 51,370.64 is: 70,891.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,656.89 : 126,486.34 = 51,370.64 : x
  2. Step 2: Convert to fraction form
    91,656.89/126,486.34 = 51,370.64/x
  3. Step 3: Cross multiply
    91,656.89x = 126,486.34 × 51,370.64
  4. Step 4: Simplify right side
    91,656.89x = 6,497,683,980.20
  5. Step 5: Solve for x
    x = 6,497,683,980.20/91,656.89
  6. Step 6: Final answer
    x = 70,891.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.